If I right-click over the Conky display and choose certain items (eg 'Internet', 'Calculator') LXLE crashes and I am immediately dumped out to the log in screen. It doesn't happen if I choose 'File Manager' from the menu, that just opens PCManFM.
the right click menu on conky actually displays the openbox menu, that openbox menu hasn't been configured outside of its default settings. So one of those menus is probably sending a command that isn't available.